Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN JUVENILE PLATE (For 2 yo R100 000 Win CRS Bonus)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Sakurajima           3    60.0    1    0.00     1.0   -     -            -     +0
2    Walt Whitman         2    60.0    2    3.00     0.0   -     -            -     +0
3    Union Rose           3    60.0    3    5.50     1.0   -     -            -     +0
4    King's Sailor        3    60.0    4    6.00     1.0   -     -            -     +0
5    Donny's Boy          3    60.0    5    8.00     1.0   -     -            -     +0
6    War Of Hearts        3    60.0    6    8.75     1.0   -     -            -     +0
7    Willowcede           2    60.0    7    9.50     0.0   -     -            -     +0
8    Deco Var             2    60.0    8    13.25    0.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sakurajima - 90 - +90 1.0 -
2 Walt Whitman - 88 - +88 0.0 -
3 Union Rose - 69 - +69 1.0 -
4 King's Sailor - 67 - +67 1.0 -
5 Donny's Boy - 68 - +68 1.0 -
6 War Of Hearts - 52 - +52 1.0 -
7 Willowcede - 67 - +67 0.0 -
8 Deco Var - 71 - +71 0.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points